Damage Prediction in Laminated Composites with Continuum Damage Mechanicsby David C. Lo, Texas A&M Univ, United States,
David H. Allen, Texas A&M Univ, United States,
Kevin D. Buie, Texas A&M Univ, United States,
Abstract: A finite element model is developed for laminated composite plates experiencing fatigue load induced microstructural damage. Continuum damage mechanics based constitutive relationships, in which the formation of damage with a laminated composite plate is modeled with strain-like internal state variables, are utilized to obtain the weak form of the equilibrium equation. A damage evolutionary relationship for matrix cracking is incorporated into the model to provide the capability to examine the response history of laminated plate structures. Finally, this model is implemented into a finite element computer code and is used to predict the response of a simple laminated plate structure loaded in fatigue.
Subject Headings: Laminated materials | Finite element method | Plates | Fatigue (material) | Load factors | Microstructure | Continuum mechanics
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